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DE602004012975D1 - RAPID RECONSTRUCTION OF DEFECTIVE PLATE SEP - Google Patents

RAPID RECONSTRUCTION OF DEFECTIVE PLATE SEP

Info

Publication number
DE602004012975D1
DE602004012975D1 DE602004012975T DE602004012975T DE602004012975D1 DE 602004012975 D1 DE602004012975 D1 DE 602004012975D1 DE 602004012975 T DE602004012975 T DE 602004012975T DE 602004012975 T DE602004012975 T DE 602004012975T DE 602004012975 D1 DE602004012975 D1 DE 602004012975D1
Authority
DE
Germany
Prior art keywords
disk
read error
mirror
lba
raid controller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE602004012975T
Other languages
German (de)
Inventor
William K Stewart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Netezza Corp
Original Assignee
Netezza Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Netezza Corp filed Critical Netezza Corp
Publication of DE602004012975D1 publication Critical patent/DE602004012975D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
    • G06F11/2087—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring with a common controller
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1879—Direct read-after-write methods
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1816—Testing
    • G11B2020/183—Testing wherein at least one additional attempt is made to read or write the data when a first attempt is unsuccessful
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • G11B2220/2516—Hard disks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/40—Combinations of multiple record carriers
    • G11B2220/41—Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
    • G11B2220/415—Redundant array of inexpensive disks [RAID] systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Hardware Redundancy (AREA)
  • Organic Insulating Materials (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

A technique for read error failover processing in a mirrored disk system such as a Redundant Array of Inexpensive Disks (RAID) system, where individual disk units perform Logical Block Address (LBA) remapping. A read error causes a disk controller to report an “unrecoverable” read error to a RAID controller. After receiving this report of an unrecoverable read error, rather than simply switching over to a mirror, the RAID controller first checks to see whether the disk that caused the error can successfully reassign an LBA. In particular, the RAID controller can retrieve the data that was associated with the failed LBA from the mirror, and then write that data to the offending disk. Only if this process does not succeed is the offending disk then treated by the RAID controller as having failed sufficiently to require failover to the mirror.
DE602004012975T 2003-02-10 2004-02-10 RAPID RECONSTRUCTION OF DEFECTIVE PLATE SEP Expired - Lifetime DE602004012975D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44636403P 2003-02-10 2003-02-10
PCT/US2004/003941 WO2004072815A2 (en) 2003-02-10 2004-02-10 Rapid regeneration of failed disk sector in a distributed database system

Publications (1)

Publication Number Publication Date
DE602004012975D1 true DE602004012975D1 (en) 2008-05-21

Family

ID=32869493

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004012975T Expired - Lifetime DE602004012975D1 (en) 2003-02-10 2004-02-10 RAPID RECONSTRUCTION OF DEFECTIVE PLATE SEP

Country Status (5)

Country Link
US (2) US7281160B2 (en)
EP (1) EP1597674B1 (en)
AT (1) ATE391956T1 (en)
DE (1) DE602004012975D1 (en)
WO (1) WO2004072815A2 (en)

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US7620772B1 (en) 2005-05-05 2009-11-17 Seagate Technology, Llc Methods and structure for dynamic data density in a dynamically mapped mass storage device
US7916421B1 (en) 2005-05-05 2011-03-29 Seagate Technology Llc Methods and structure for recovery of write fault errors in a dynamically mapped mass storage device
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Also Published As

Publication number Publication date
WO2004072815A3 (en) 2005-04-14
ATE391956T1 (en) 2008-04-15
WO2004072815A2 (en) 2004-08-26
US20040268179A1 (en) 2004-12-30
US7281160B2 (en) 2007-10-09
US7840838B2 (en) 2010-11-23
EP1597674B1 (en) 2008-04-09
EP1597674A2 (en) 2005-11-23
EP1597674A4 (en) 2006-10-11
US20070300101A1 (en) 2007-12-27

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Legal Events

Date Code Title Description
8332 No legal effect for de